Device for locking the extruding die on the head of an extruding press for doughy materials



June 10, 1958 M./BRAIBANTI ETAL DEVICF FOR Loom 2,838,01 1 "NG THEEXTRUDING DIE ON THE HEAD OF AN EXTRUDING PRESS FOR DOUGI-IY MATERIALSFiled Nov. 14 1955 United States Patent Ofiice Patented June 10, 1958DEVICE FOR LOCKING THE EXTRUDING DIE ON THE HEAD OF AN EXTRUDING PRESSFOR DOUGHY MATERIALS Mario Braibanti and Giuseppe Braibanti, Milan,Italy Application November 14, 1955, Serial No. 546,748

Claims priority, application Italy November 20, 19 54 1 Claim. (Cl.107-14) This invention relates to dies for extruding presses, and moreparticularly to means for positioning dies in the heads of such presses.

It is an object of the invention to provide an improved mechanismwhereby a die can be readily assembled and disassembled in a press.

A further object of the invention is to provide an improved extrudingmechanism wherein all parts are readily accessible.

The invention in one preferred form is characterized in that in a headof a press a fixed abutment is provided which is capable of holding adie by contact with only a part of the perimeter of the die. Cooperatingwith the fixed abutment but outside of the plane thereof is provided amovable abutment for maintaining the die in position against the fixedabutment and which is capable of impeding motion of the die with respectto the fixed abutment.

Advantageously, the structure offers the possibility of air cooling thedie since, as will be seen, a large part of the surface of the die isexposed. Furthermore, by reason of the convenient accessibility of thedie, the application of water cooling mechanisms is quite practical.

For a clearer understanding of the invention reference will behereinafter made to one embodiment thereof shown, by way of example onlyand without implying any limitation, in the accompanying drawing,wherein:

Fig. 1 is a vertical sectional view of the head of a press fitted withthe locking device of the invention and Fig. 2 is a sectional view takenalong line BB of Fig. 1.

The locking device essentially consists of an abutment 4, integral with,or alfixed to the head 5 of the press and extending along only a part ofthe lower surface of the die 1, which latter is prevented from pivotingabout the abutment 4 by a movable abutment 6 in a plate, or gib 2,slidable in a slot 7 of the head 5 and displaceable and adjustable bymeans of a nut 8. 3 is a filter mounted before the die 1 and 9 is, agasket which prevents the dough from leaking between the rims of thefilters and of the head.

To dismantle the die all that need be done is to lift plate 2disengaging the movable abutment 6 and pivoting the die about abutment4.

It is apparent that the plate, which embodies the movable abutment, maybe either vertically or horizontally slidable, or also movable about afixed pin.

What we claim is:

A locking device, for a die used in an extruding press, comprising a dieholding member including a body portion defining a passage for thematerial to be extruded and a further portion coupled to and extendingfrom said body portion at one side of the passage, an abutment on thefree extremity of said further portion extending transverse to saidpassage, the die seating against said further portion and abutment, anda block controllably slidable in said body portion in parallel with saidfurther portion and at the other side of said passage for locking saiddie in seated position.

References Cited in the file of this patent UNITED STATES PATENTS1,422,356 Heller July 11, 1922 2,061,407 Royle Nov. 17, 1936 2,642,016Thalmann June 16, 1953 2,679,216 Grondona May 25, 1954

